linux-kernel - [PATCH 3/4] Documentation: x86: Clarify MBA takes MB as referring to mba

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Message-Id: <20190607151409.15476-4-james.morse@arm.com>
Date:   Fri,  7 Jun 2019 16:14:08 +0100
From:   James Morse <james.morse@....com>
To:     linux-doc@...r.kernel.org, x86@...nel.org
Cc:     Jonathan Corbet <corbet@....net>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Babu Moger <Babu.Moger@....com>, linux-kernel@...r.kernel.org,
        James Morse <james.morse@....com>
Subject: [PATCH 3/4] Documentation: x86: Clarify MBA takes MB as referring to mba_sc

"If the MBA is specified in MB then user can enter the max b/w in MB"
is a tautology. How can the user know if the schemata takes a percentage
or a MB/s value?

This is referring to whether the software controller is interpreting
the schemata's value. Make this clear.

Signed-off-by: James Morse <james.morse@....com>
---
 Documentation/x86/resctrl_ui.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/x86/resctrl_ui.rst b/Documentation/x86/resctrl_ui.rst
index 638cd987937d..866b66aa289b 100644
--- a/Documentation/x86/resctrl_ui.rst
+++ b/Documentation/x86/resctrl_ui.rst
@@ -677,8 +677,8 @@ allocations can overlap or not. The allocations specifies the maximum
 b/w that the group may be able to use and the system admin can configure
 the b/w accordingly.
 
-If the MBA is specified in MB(megabytes) then user can enter the max b/w in MB
-rather than the percentage values.
+If resctrl is using the software controller (mba_sc) then user can enter the
+max b/w in MB rather than the percentage values.
 ::
 
   # echo "L3:0=3;1=c\nMB:0=1024;1=500" > /sys/fs/resctrl/p0/schemata
-- 
2.20.1